CROSS-CORRELATION EFFECTS IN THE TRANSVERSE RELAXATION OF MULTIPLE-QUANTUM TRANSITIONS OF HETERONUCLEAR SPIN SYSTEMS

被引：37

作者：

KONRAT, R ^{[1
]}

STERK, H ^{[1
]}

机构：

[1] GRAZ UNIV, INST ORGAN CHEM, A-8010 GRAZ, AUSTRIA

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 203卷 / 01期

关键词：

D O I：

10.1016/0009-2614(93)89313-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The relaxation of multiple quantum transitions in a heteronuclear three-spin system is described in terms of Redfield theory including intramolecular dipolar and chemical shift anisotropy (CSA) mechanisms. CSA-dipolar cross-correlations, interference terms between CSA terms at different nuclear sites and cross-correlations between different dipolar interactions are illustrated and discussed. It is shown that cross-correlations between various relaxation mechanisms lead to non-exponential relaxation behaviour of multiple-quantum transitions, thus causing differential line broadening.

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页码：75 / 80

页数：6

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